Austro Engine E4
The Austro Engine E4 is a liquid-cooled, inline, four-cylinder, four-stroke, aircraft diesel engine. The engine is manufactured by Austro Engine, an Austrian-based company and subsidiary of Diamond Aircraft Industries.
Development
The engine is based on the Mercedes-Benz OM640 road Diesel engine.Following Diamond's "General Aviation Single Point of Contact" strategy, Austro Engine started to design a new engine for use on Diamond products in 2005. It received its type certificate in January 2009.